Bearing for crossheads and the like



Nov. 14, 1939. T. v. BucKwALTER 18.0315

BEARING FOR CRQSSHEADSl AND THE LIKE Filed arch 4, 1938 Patented Nov. 14, 1939 UNITED STATES PATENT oFF-lcs I 2,180,315 BEARING FOR CROSSHEADS AND THE LIKE Application March 4, 1938, Serial No. 193,829

3 Claims.

My invention relates to bbearings for locomotive crossheads and the like, wherein a member located adjacent to the end of the bearing may creep axially or endwise into Contact with the end of a bearing member, thus resulting in serious wear and galling of both members,"

The invention has for its principal object to obviate the dangers above indicated. The invention consists principally in providing a taper roller bearing of the ribbed cup type with a wear or friction plate covering the end face of the cup and thrust rib and held in position by means of an annular flange pressed into the inner periphery of said thrust rib. The invention further consists 'in the parts and combinations and arrangements of parts hereinafter described and claimed.

In the accompanying drawing: v

Fig. l is a longitudinal sectional view of a crosshead bearing mounting embodying my invention; and

Fig. 2 is a fragmentary sectional View, on an enlarged scale, of the roller bearing and immediately associated parts.

Fig. 1 illustrates a crosshead bearing of the type shown in my Patent No. 2,037,209, wherein a wrist pin I extends through openings 2 in the arms 3 of the crosshead yoke member 4 and through an opening 5 in the locomotive main rod 6 which is disposed between said yoke arms. Said rod 6 is fixed on said pin I.

The pin I has raceway portions 1 that taper away from said rod 6 and taper bearing rollers 8 are mounted on said raceway portions. Cups 9 or outer bearing members for said bearing rollers 8 are mounted in the arms 3 of said yoke member. Said cups 9 have internal thrust ribs I at the large ends of their raceways II for engagement with the large ends of the conical rollers 8.

At the outermost ends of said cups 9 are closure plates I2 that are mounted in the yoke arms 3 and held in position by means of positioning and adjusting rings I3 that are held by cap screws I4. These closure plates I2 serve as ribs for closely conning the small ends of the rollers 8 and they extend into close proximity with the raceway portions 1 of the pin I.

Although fixed on said pin I, there is danger that said rod 6 may creep axially of the pin into engagement with the end faces of an adjacent cup and thrust rib of the bearing illustrated in my said Patent No. 2,037,209, or other relative movement of the parts may bring about such engagement. According to the present invention, the end face of the cup 9 and thrust rib I0 is covered with a wear or friction plate I of bronze or other friction resistant metal, said plate extending into proximity with a raceway portion I of the pin and having an annular flange I6 on its inner face `which is pressed into the inner periphery of the thrust rib I0, thereby securely holding the wear plate in the cup. Preferably, the inner face I1 of said annular `ilange is spaced away from the ends of the rollers 8.

The advantage of the present invention is that, if there should be engagement of the wear plate with the rod, said wear plate, being made of bronze or other bearing metal, will withstand rubbing engagement without damage to either the wear plate or the rod. In the event of wear on the friction plate, it can be replaced.

What I claim is:

1. A taper roller bearing mounting for locomotive crossheads and the like comprising a rod having an opening in its end, a pin mounted in said opening with its end projecting beyond said rod, a taper roller bearing on said projecting portion of said pin including taper rollers and a bearing member having a thrust rib engaging the large ends of said rollers, the outer face of said thrust rib and bearing member being adjacent to said rod, and a friction plate covering the end face of said bearing member and thrust rib and extending into close proximity with said rod, said plate having an annular flange overlapping the periphery of said thrust rib.

2. A taper roller bearing mounting for locomotive crossheads and the like comprising a rod having an opening in its end, a pin mounted in said opening with its end projecting beyond said rod, a taper roller bearing on said projecting portion of said pin including taper rollers and a bearing cup having an internal thrust rib engaging the large ends of said rollers, the outer face of said thrust rib and cup being adjacent to said rod, and a friction plate of bearing metal or the like covering the end face of said cup and thrust rib and extending into close proximity with said rod, said plate having an annular flange ertending into the inner periphery of said thrust r1 3. A taper roller bearing mounting for locomotive crossheads and the'like comprising a rod having an opening in its end, a pin mounted in said opening with a tapering portion projecting beyond said rod, a taper rollerl bearing on said projecting portion of said pin including taper rollers running on said tapering portion of said pin and a bearing cup having an internal thrust rib engaging the large ends of said rollers, the outer face of said thrust rib and cup being adjacent to said rod, and a friction plate of bearing metal or the like covering the end face of said cup and thrust rib and extending into close proximity with said rod, said plate having an annular flange pressed into the inner periphery of said thrust rib.

TRACY V. BUCKWALTER. 

